Detachable lock mechanism



Jan. 1, .1935. J, H, SHAW ET AL DETACHABLE 7 Lock MECHANISM Filed May 17, 1928 2 Sheets-Sheet l Jaml, 1935. J. H. SHAW EF AL v 1,936,452

DETACHABLE LOCK MECHANISM F iled May 17, 1928 2 Sheets-Sheet 2 Patented Jan. 1, 1935 1,986,452} l i DETACHABLEY Loon MECHANISM John H. Shaw andJoseph J.- Drexlehfiew Haven,

Comm, assignors to Sargent &. Company, New

. Haven, Conn.

R *l p u nM y1 .1 a seminarian .r V 36 C ms (cl'.70-;-91)-1 1.

Our invention relates to a detachable lock mechanism, and more especially to a lock mechanism in which the detachment thereof is under the control ofa key; It has; heretofore been the detachment oh the mechanism isunder the control of a key. Inthe detachable lockmecha- I nisms heretofore known; especially in pin tumbler bra-broughtinto alignment with the surface of the key plug to permit the rotation of the latter by a suitable key during the normal operation of r the look, while anothersetis-brought into align ment in the secondary locking system by; a special key toeffect thecunlockingof this system and the detachment of the pin tumbler mechanism.

tionto provide a detachable lock mechanism in which the detachment of the mechanism'may be, under the" control of a key, and in which nospecial form of tumbler mechanism need be employed, thus avoiding: the complicated tumbler asimplenform oflock less apt to get outof order. Anotherobject of the inventionis to provide a detachable lock mechanism in which thetumblers;

of the lock'are aligned in the same-manner'in the normal operation of the-lock. if Still another object; of the invention is. tobring detaching, the lock mechanism as theyareduring v l our improved form of detachable lock mechaabout. a lock mechanism of theabove character which is: providedwith, a secondary lockingsysterm; the operation of which maybe effected by a key insertedinto the usual key opening. In a more specific aspect,.the invention contem plates'a form of locking mechanism for adoor or the like, in which the tumbler mechanism is ,which the tumbler mechanism may be made readily accessible in order to changethe of the lock, or for otherpurposes.

a knob for. a lock mechanism of a door or the like e in which the tumbler mechanism is carried the proposed memes? oletachable tumbler mechanisms for looks in whichz.

"t r n It is in general, an object of thepresent invenmechanisms of the'prior locks andbringing about carried within the handleof the'door, and in combination;

Afurther object of thefinvention is'toprovide' A "still further. object a; as in ention ism providera. lock for a door or the...1ik,."inwhich the tumbler mechanism is carried in the liandle.

of. the door, thehandle be'ingnormallysejcured a. the; lock. mechanism but at least; in part 'detaohable therefrom by. means of a sui-table'key.

inserted into. the tumbler mechanism lthe latter.

being readily dismountablefrom the knob, upon;

detachment of the latter, without the-use. of any tool, -ortools v i To these and. other ends; (the invention consists intheln0ye1 features and. combination of.

parts, to be hereinafter describedand claimed.

In*the, .drawings,

. l I Fig. i 1 is 'a fragmentary view ofg a ido'or having; a lock in accordance with my inyentionmounted Big 2 is a view-along line. 2- 2iof.

. Fig. 8 isa sectional view along line We will now describe our invention incOnnec-L jg. 3..-is a, sectionalwview along line 35-.3. or

line. 4.

tion' withithe preferred embodiment thereof shown in the drawings in which we have shown.

nism when used in connection with a separable door knob, althoughit will bejreadily understood as the description thereof proceeds that in certain aspects the invention is not limited to use in a separable knob but has a much broader scope. f 7

Referring to the drawings; the reference nu'- meral 9 indicates in generala door'having mountedthe'rein a lock case 10 provided with awall 11' in'which is. mounted a. pivoted latch bolt12- spring 23, mounted on stem 13 between transverse lock case part 51*jand adapted tosbe .re'-

verse portion 24 of lock case 10' and pivoted latch bolt 12.

On either side of the door knob are escutcheon plates 25 and 26, having mounted therein, preferably in a permanent manner, collars 27 and 28, and mounted in coll'ars 2'7 and 28 and extending transversely of lock case 10 is a tubular element 29 secured against displacement in lock case 10, in a manner to be hereinafter fully pointed out.

end of tube 29, while at the opposite side of door 9 is a handle 32 provided with'a shank 33 received within the opposite end of tube 29. The inner end of shank 33' is provided with openings 34 and 35 in which are received talons 21 and 22 of rollback 18, while shank 31 is provided with similar openings for the reception of talons on.

rollback 20. Shank 33 is' connected to handle 32by aradially, extending part 36,.in a manner to be hereinafter fully pointed, Out. J

"In the interior of handle 32 isa cylinder lock- 3-7 secured against rotational displacement, in thehand1e 32 by'meansof lugs 38 on handle 32 between which is received1a lug 38 on cyliinder' lock 37'. Mounted in cylinder lock"37 is a key plug 39; provided with the usual keyflopening 40 and a plurality of spaced openings 41, which; together with a similar'number of openings in. thecylinder lock case, receive thepinfltmnbler sections 42 and springs43. At its inner end key a plug 39 is secu'redb'y. means of pin 44 to thimbl'el 35' 45, having received in a square opening therein a square rod 46 which extends through a'similarly shapedopening inrollbackf'19 and into the opening47"in handle 31. f Mountedin wall 11, of lock .case 10 is a pivoted lever 48jconnected'fby means ofrod 49 to a looking pin 50" mountedin a' suitable opening in transc'eived in openings 52 and .53 of tubular part '29 Y andshank 33, respectively. The end of locking' pin is always' receivedin the opening 52 in tubularpart 29, as indicated. in Fig. 4. of the drawings, locking'pin 50 serving to prevent movement of tubular part '29. in.l ock case 10.v I-Iandle shanks '31 and 3 3 are held against movement in 50" an axial directionby means of keys 31 of which but one is shown, keys 31 being 'mounted in lock caselO and extending intogrooves 31 and 33 "'ofjshank's31 and 33, respectively.

.. ,"The normal operation of .the'lock will be readily understoodfrom the" above descriptionand. maybe briefly described as follows:' The latch. bolt 12 maybe retracted-at all times by handle 30, which ison theinterio'r. of the door, by means of the'connection between shank 31 and rollback; 20 ,1while the latch bolt 12 may be'retracted= by means of handle 32, through the connection betweenits shank; and rollback 18, at. all times except-when'theshank 33 'is'dogged againstmovemerit by'locking -pin 50 being inserted into the or the lock meenamsm, the latchbolt 12 may.

only beretracted-from the exteriorofthe door by, means of a suitable key inserted into the tumbler mechanism. Upon the insertion of a suitable key in the tumbler mechanism the shears in the pin tumblers are brought into alignment with the surface. of. the key plug, whereupon the,

latter may'berotated by means of the key and through the rod 46 the rollback 19 is rotated to retract the latch bolt.

Up to this point in the description of our invention we have been concerned with those features which enter into the normal operation of the look. It is highly desirable, however, to provide a lock mechanism in which the tumbler mechanism may be readily detached to change the combination of the lock, or for other-"purposes, and we will now describe those features of our invention which provide a suitable means to that On one side of door 9, is a handle 30 provided with a shank 31 received within the adjacent end. I I I Referring again to the drawings, it will be seen that the transverse part 36 of shank 33 is provided with a plurality of circumferentially spaced lugs 54, received within openings 55, in handle 32, while on key plug 39 is a substantially disklike element'56 mounted between shoulder 57 of key plug 39 and flanged portion 58 of thimble 45 which prevents axial movement of the disk-like element 56. Disk 56 is provided with a plurality in an axial direction from shank part 36, Mount ed in opening '70 of cylinder lock case 37is a plunger 71 forced by spring 62' against disk 56, whichis provided with a groove 63 in which the plunger-rides during the operation of thesec on'dary locking system, disk 56' being provided with an opening 64 in gr0ove 63 in which the plunger is received during the normal operation of thelock mechanism to hold the diskagainst movement relative to cylinder lock case 3'7. A:

stop pin'65, mounted in'cylinder lock' case 37 cooperating with shoulders 66 and 6'7 of disk 56,-

lirnitsthe rotary movement of the disk onkey plug 39. Disk 56 is provided with an opening 63 in which the end of a suitable key may be received, opening 68 being normally out of alignment with the key opening 40 in key plug 39, as shown in Fig. 7. In order to conceal the lugs on handle 32 and shank part 36, a shroud 69 is provided which is mounted on and extends from the end of tube29 to the adjacent end of han;-

clle 32.

In dismounting the cylinder look from the handle, the operation is as follows: A suitable key, such as that disclosed and claimed'in the patent of John H. Shaw, #1,821,361, September 1, 1931, is inserted into the key plug into a position in which the notches in the key bit bring the pin tumblers into alignment with the surface of the key plug and the inner end of the key is in engagement with disk 56, as shown in Fig. 3. The key and key plug are now rotated into the position shown in dotted lines in Fig. 1 to bring the key into position opposite the opening68 in disk 56, whereupon the key is inserted into the key plug into the position shown in Fig. 5, in which the key is shown as received in opening 68 of disk 56. Disk 56 may now be rotated into the position shown in dotted lines in Fig. 7, in which position the lugs 59 of disk 56. aredisengaged from openings 54 in lugs 54 of shank part 36. The.

handle 32 may now be moved in an axial direction and detached from the shank33, handle 32 carrying with it the cylinder lock 37.

Upon the changing of the combiantion of the lock or effecting such other changes as may have necessitated the dismounting of the handle 32, the cylinder lock is again assembled in handle 32 with'lug 38 received between parts 38, and

areaaoiaiegts theatbvees ene avmg mes msih mounted within the asing between said able notches therein fo'r aligning; the-'pin- 'tumt F t. in

until the d -thereofiis no longer received opening 68; whereupon the key a'ndkey plugare roitatedf-into the position shownin full lines in t by akey tolock the 'cover to Where rom" the ioregoing description of the nature invention-and its mode of operation, it e readily understood thatwe have provided rel vel'y simple form of detachable lockmechaiiisizfin which a usual form tumbler mechnism may be usedj thus avoidingthe troubles usuallyfexperieneedf through the use of pintumblefs having a pluralityofbreaks or shears. It

i will also be apparent that the parts ofjthe jsfecondary locking system arearranged inga manner wherein they; are-inaocesible except through the use joi a special key; and thus "the lock may not be ftampered with'by fone seeking to force the same, The partsof-the secondarylooking system 7, are'simple and thus are not apt to become out' Ofj'QljtiEIQjfl While wehave shown as a preferred 'embodimeritof our invention, a detachable lock mechanism nipunted doorknob, "it will be readily understood' by onelskilledin the "art that i th "features" of {our invention "are such that it to e 11 m fl el h rl i r s v l sk 'I will be seenthat the portion- 32of the knob lock'fcase or housi aiwiuiin which the pin s ervin'gas the'main part of the caseand the part lifi serving as a cover 'wlierebywhen the twoparts arefsecured together they form a closed case about'thelockingmeohanismi v v While we have showna preferred embodiment Qf 6 inven n s t n abs: e st d ihatihe same is not wise 1imite'd' to all the details shown within pnes ira pr theinvention and the scope q oftl' e appended-"claims.

' I Inalock, a two part lock casinga unitary lbol rneohanismf'mounted between said parts an eparable as a unit therefrom and rotatable m ansbontroiled by the lock-mechanism for locking saidfparts together? Ina lock, atwo part casing,'lock mechanism.

In nted within said vcasing between said parts, and rotatable means controlled by the look mechanism'ior looking'said parts together, said means being "engage'able by a'key received in the lock Aiock, comprising a 't'woipart lock case and locking mechanism housed between said parts,

' saidj mechanism including an element rotatable by' a 'key t erelease s'aid parts 'for detachment.

from between said parts.

o b an e and a d l ck jm is In alock; a case;1lock mechanism: mounted:

1 In slee a' lock casing, Said casing including twoseparable parts, a unitary lock mechaponth'e key may bewithdrawn' from and the partfi onthe shank constitute together mechanismlto be rotated into" releasing position.

parts and detachable as a unit therefromwhen the parts are separated; and means engaging both parts to prevent relative movement there between; said means being rotatable by a key into part releasing position.

7. In a look, a lock casing, said casing including twd'separable parts, a unitary lock mechanism-mounted"wi-thin the casing between said parts fand detachableas a unit therefrom when the pa-rts areseparatedj andmeans on said lock mechanismengaging both parts to prevent relative movemen therebetween, said means being rotatable by keyrec eived in: the lock mechanism to release the partS 'for separation.

"Sf'Ih a lockj a two partcase provided with oyerlapping ends,1qck"mechanism mounted in said base between saidfparts and means engaging saidjoyerlapping ends to secure the parts of the case together, said means being movable by a key" into position to release saidparts for separation.- H a r 9;I nlockfia two partcase provided with overlapping ends, lock mechanism mounted in said case a nd,"{rotatab1e means engaging said ,oyerlapping ends to secure the parts of the case together; said means'being rotatable by a key intoposition'to release said parts for separation,

the'lock mechanism being freely'detachablefrom the case partswhen the latter are separated.

lorIna lockjmechanism for a door, a door Handle, said; handle being'provided with a shank a body, a spindle connected to said body and ext'ending through saidjshank, key operable means normally locking said shank to the body,

said means being operable by a key of proper shape and movable thereby into unlockingposi- ,113 a mechanism for a door, a door ing; said shankto the body, said means being movable by, a key. into unlocking position.

12. ,Injaa lockmeohanisml for a doorya door handle, said; handle being provided with a shank and a body, lockmechanism mounted between said' s'hankl and body; meansinormally locking.

said shank tothe body, said means being movable into unlocking. position by a key received;

the lock. mechanism. 7 13. Ina look; a two part locktcase, tumbler mechanism mounted in said case and freely sep- V arable from the parts thereof, said mechanism including a. key plug., an'd means on said key plug fiorilocking thelparts of the lock case together withthe tumbler mechanism mounted therein.

14'. Ina look, a two part lock case provided with overlapping parts, tumbler mechanism mounted in said case and separable as a unit from the case parts, ,said. mechanism including a key plug and means on said key plug for locking the parts of the lock case togethensaid means being engageable by a key insertedin the key plug'to be moved into unlocking position. i

1 15; In a look, a two part lock case providedwith overlapping parts, tumbler mechanism mounted in saidcase and detachable'asi a unit from the partsof the case when the latter are unlocked from one another, said mechanism including a keyplug and rotatable means on said key plug for. locking .thepartsof the lock case together with the tumbler mechanism mounted therebetween, said means being engageable by a key inserted in the key plug to be moved into unlocking position. Y I i 16. Ina lock, a two partlock case, lock mechanism in said -case,, said'lock mechanism being freely removable from the parts of the case when the-latter are detached from one another, a rotatable disc in said case normally engaging said parts to lock them together,'said disc being rotatable by a key into position to unlock the parts of the case for detachment from one another.

1'7. In a'lock, a two part lock case, lock mechanism in said case and separable as a unit therefrom, a rotatable disc in said case normally engaging said parts to lockthem together, said disc being rotatable by a key inserted in the lockmechanism into unlocking position; a

18; In a look, a two" part lock case, lock mechanism mounted in saidcase'between said parts, said mechanism includinga'key plug, a rotatable disc mounted on said key plug, said disc normally locking the parts of the lock case together but being rotatable into unlocking position by akey inserted in the key plug.

'19; In a look, a two part lock case, lock mechanism mounted in said case between said parts, said mechanism including a key plug, a rotatable discmounted on said keyplug, said disc normally locking the. parts of the lock case together but being rotatable into unlocking position by a key inserted in the key plug, and means for holding said disc against movement during the normal 'operationof the lock.

20. In a lock'for a door or the like, a door handle, said handle being provided with a hollow body portion and a separable shank, lock mechanism mounted between said body portion and shank, saidlock mechanism including a key plug and a rotatable element on said key plug engaging. the body portion and shank to normally lock them together, said element being rotatable by a key inserted in the lock mechanism into unlocking position. 4 a 21. In a lock for adoor or the like, a door handle, saidhandle being provided with a hollow body portion and a separable shank, lock mechbeing accessible for removal upon detachment of said parts, said mechanism including a key plug, and means rotatably mounted on said plug for locking the parts of the handle together, said key plug and means mounted thereon being connected by a key for rotation together.

2 3.A two part door handle having locking mechanism mounted therein, said mechanism being accessible for removal upon detachment of said parts, said mechanism including a key plug,

and means rotatably mounted onsaid plug for locking the partsof the'handle together, said key plug being rotatable independently of and also similarly with said means.

, 24. In a look, a lock casing, said casing including two separable parts, means engaging both parts to prevent relative movement therebetween, said means being rotatable by a key to release the parts for detachment from one another, and a. lock mechanism mounted between said parts and freely detachable from both of said parts when the latter are released from one another.

25. In a lock for a door,a two part case provided with overlapping ends, one of the parts being adapted to be mounted on the door, locking mechanism mounted between said parts and having an operative portion thereof extending into the part adapted to be mounted on the door, the other of said parts serving to hold the locking mechanism in operative position with respect to the first of the parts,and means engaging said overlapping ends to secure the parts of the case detachably together, said means being movable anism for locking said parts together with the locking mechanism mountedtherebetween, said means being engageableby a key received in the locking mechanism to be rotated into position .to unlock said parts, from one another.

27. In a lock, a two part lock case provided with overlapping ends, tumbler mechanism mounted in said case and separable as a unit from theparts thereof, said mechanism including a key plug, and means on said key plug for locking the parts of the case together, and the tumbler mechanism in one of said parts, said means being eng'ageable by a key inserted in the key plug to be moved into position to unlock the parts of the case from one another and the tumbler mechanism from said part.-

28.v In a look, a two part lock casing, a unitary locking mechanism mounted between said parts and freely separable as a unit therefrom, and' rotatable means controlled by thelocking mechanism for releasably locking said parts together with the locking mechanism mounted therebetween.

29. In a look, a two part casing, locking mech-, anism detachably mounted'within one of said parts, and combined means for holding said locking mechanism in said part and locking the two parts ofthe case together, said combined means being engage'able by a key inserted in the locking mechanism to be moved into position to release the casing parts for detachment from one another and the locking mechanism from said part.

30. In a lock mechanism for a door, a door handle, said handle being provided with a shank and a body, means carried by the lock mechanism and inaccessible from the exterior thereof for locking said shank to the body, key operable means adapted to be actuated by a key of proper shape to move said first named means to lock said shank to the body, said first named means being movable into unlocking position by such a key inserted in the key operable means.

31. In a lock mechanism for a door, a door handle, said handle being provided with a shank and a body, key operable mechanism mounted in said body including a tumbler mechanism, and means actuated by said key operable mechanism for locking said shank to said body, said means beingmovable into unlocking position by a key of proper. shape toset the tumbler mechanism rotatably mounted within said casing, a rotatable means on said plug but held against axial movement thereon, lugs on said means adapted upon rotation to engage or disengage with recesses formed within said shank, said plug being key operable independently of. said means, and said plug and means being key operable together to engage and disengage said lugs.

34. In a look, a knob, a lock casingwithin said knob, a shank to be secured to a door, said'knob and shank having respectively integral interengaging portions to prevent relative rotation thereof, and key actuated means carried by said lock casing for locking said knob and shank together.

35. In a cylinder look, a casing, a core in said casing," key controlled means for releasably retaining said core in said casing, said means including spaced elements between which the core is received, and means for locking said elements together.

36. A 'door lock comprising a casing, a lock core removably mounted in the casing and containing a rotatable key barrel, a tumbler mechanism to control the rotation of the barrel, and key controlled means in the casing beyond the core to lock the core to the casing. 1

JOHN H. SHAW. JOSEPH J. DREXLER. 

